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Task: Divide this line of Python code into meaningful steps.

aa = np.array([[1, 2], [3, 4]])

Answer:
assistant
Step 1: Create an array using np.array():  aa = np.array([])
Step 2: Add the objects [1, 2]:  aa = np.array([[1, 2])
Step 3: Add the objects [3, 4]:  aa = np.array([[1, 2], [3, 4]])